ute;´介绍说明:
´本例演示了怎样移动无标题栏窗体思路方法中涉
´及到MouseDown、MouseMove、MouseUp 3个鼠标事件
´使用我们可以从中学习到它们使用方法
´---------------------------------------------
Option Explicit
´变量声明
´MoveScreen布尔型变量标示窗体是否处于被移动状态
Dim MoveScreen As Boolean
´鼠标位置
Dim MousX As Integer
Dim MousY As Integer
´窗体位置
Dim CurrX As Integer
Dim CurrY As Integer
´“退出”按钮
Private Sub CmdExit_Click
End
End Sub
´当鼠标在窗体上按下时
Private Sub Form_MouseDown(Button As Integer, Sht As Integer, X As Single, Y As Single)
´---------------------------------------------
´参数介绍说明:
´---------------------------------------------
´button 返回个整数用来标识按下或释放是哪
´个按钮button 参数值为相应于左按钮(1)右按钮
´(2)以及中间按钮(4)
´---------------------------------------------
´sht 返回个整数在鼠标按钮被按下或者被释放
´同时SHIFT,CTRL,和 ALT 键状态返回sht
´参数值分别为12和 4指示这些键状态
´---------------------------------------------
´x, y 返回个指定鼠标指针当前位置数
´---------------------------------------------
´如果是鼠标左键按下
If Button = 1 Then
´标示为移动状态
MoveScreen = True
´得到鼠标在窗体上位置(相对和窗体内部坐标)
MousX = X
MousY = Y
End If
End Sub
´当鼠标在窗体上移过时
Private Sub Form_MouseMove(Button As Integer, Sht As Integer, X As Single, Y As Single)
´如果处于鼠标左键按下状态即MoveScreen = True时
If MoveScreen Then
´计算新窗体坐标值
´仔细想下看看是不是这样
CurrX = Form1.Left - MousX + X
CurrY = Form1.Top - MousY + Y
´移动窗体到新位置
Form1.Move CurrX, CurrY
End If
´把新窗体坐标显示出来是相对于屏幕坐标
Label1.Caption = CurrX
Label2.Caption = CurrY
´把鼠标点击位置显示出来是相对和窗体坐标
Label3.Caption = MousX
Label4.Caption = MousY
End Sub
´如果鼠标松开则停止拖动
Private Sub Form_MouseUp(Button As Integer, Sht As Integer, X As Single, Y As Single)
MoveScreen = False
End Sub
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